import { reqCartList, reqDeleteCartById, reqUpdateCheckedByid } from '@/api';
const state = {
    cartList:[],
};
const mutations = {
    GETCARTLIST(state,cartList){
        state.cartList = cartList;
    }
};
const actions = {
    //获取购物车列表的数据
    async getCartList({ commit }) {
        let result = await reqCartList();
        if (result.code == 200) {
            commit("GETCARTLIST", result.data);
        }
    },
    //删除购物车某一个产品
    async deleteCartListBySkuId({commit},skuId){
        let result = await reqDeleteCartById(skuId);
        if(result.code == 200){
            return "ok";
        }else{
            return Promise.reject(new Error("faile"));
        }
    },
    //修改购物车某一个产品的选中状态
    async updateCheckedById({commit},{skuId,isChecked}){
        let result = await reqUpdateCheckedByid(skuId,isChecked);
        if(result.code==200){
            return 'ok';
        }else{
            return Promise.reject(new Error('faile'));
        }
    },
    //删除全部勾选的产品
    deleteAllCheckedCart({dispatch,getters}){
      //context:小仓库，commit[提交mutation修改state] getters[计算属性] dispatch[派发action] state[当前仓库数据]  
      //获取购物车中全部的产品（是一个数组）
      let PromiseAll = [];
      getters.cartList.cartInfoList.forEach(item=>{
       let promise = item.isChecked==1?dispatch('deleteCartListBySkuId',item.skuId):'';
        //将每一次返回的Promise添加到数组当中
        PromiseAll.push(promise);
      });
      //只要全部的p1|p2....都成功，返回结果即为成功
      //如果有一个失败，返回即为失败结果
      return Promise.all(PromiseAll);
    },
    //修改全部产品的状态
    updateAllCartChecked({dispatch,state},isChecked){
        //数组
        let promiseAll = [];
        state.cartList.cartInfoList.forEach(item=>{
            dispatch('updateCheckedById',{
                skuId:item.skuId,
                isChecked,
            });
            promiseAll.push(promise);
        });
        //最终返回结果
        return Promise.all(promiseAll);
    }
};
const getters = {
   cartList(state){
    return state.cartList[0]||{}
   }
};
export default {
    state,
    mutations,
    actions,
    getters
}